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-rw-r--r--src/libsyntax/lib.rs7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 89c67b88cbd..32dafcdb582 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -15,7 +15,6 @@
 //! This API is completely unstable and subject to change.
 
 #![crate_name = "syntax"]
-#![unstable(feature = "rustc_private", issue = "27812")]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
 #![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
@@ -24,12 +23,14 @@
        test(attr(deny(warnings))))]
 #![deny(warnings)]
 
-#![feature(rustc_private)]
-#![feature(staged_api)]
 #![feature(unicode)]
 #![feature(rustc_diagnostic_macros)]
 #![feature(i128_type)]
 
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
+
 extern crate serialize;
 #[macro_use] extern crate log;
 #[macro_use] extern crate bitflags;